Changes to 84/89/ECSC: Commission Decision of 21 December 1983 amending Decision 78/975/ECSC of the Commission of 16 November 1978 on the authorisation of special Deutsche Bundesbahn tariffs in favour of coal and steel producers in the Saar (Only the German text is authentic)
EU Decision 1984/89
No changes to 84/89/ECSC: Commission Decision of 21 December 1983 amending Decision 78/975/ECSC of the Commission of 16 November 1978 on the authorisation of special Deutsche Bundesbahn tariffs in favour of coal and steel producers in the Saar (Only the German text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.